1. Non linear particle trajectories in a whistler mode wave packet;Abdalla;Tech. Rep. Imperial College, London,1970
2. The transmission of electromagnetic waves through the ionosphere at micropulsations frequencies;Altman;Alta Frequenza,1969
3. Wave Propagation and Group Velocity;Brillouin,1960
4. Theoretical simulation of micropulsations;Cocke;J. geophys. Res.,1967
5. Micropulsations and the outer radiation zone;Cornwall;J. geophys. Res.,1966